No medical certificate under these regulations shall be issued except by the Insurance Medical Officer to whom an insured person has been allotted or by an Insurance Medical Officer attached to a dispensary, hospital, clinic or other institution to which an insured person is allotted and such Insurance Medical Officer shall examine and if in his opinion the condition of the insured person so justifies, issue to such insured person free of charge, any medical certificates reasonably required by such insured person under or for the purposes of the Act or any other enactment or these regulations :
Provided that an Insurance Medical Officer may issue a medical certificate under these regulations to an insured person who is not allotted to him or to the dispensary, hospital, clinic or other institution to which he is attached, if such officer is satisfied that in the circumstances of any particular case the insured person cannot reasonably be expected to get medical benefit from the Insurance Medical Officer or the dispensary, hospital, clinic or other institution to which such insured person has been allotted ; and such certificate also shall be issued free of charge :
Provided further that an insured person shall not be granted a medical certificate unless he produces to the Insurance Medical Officer his Identity Card or such other “ Documents ”, as under these regulations, may have been issued in lieu thereof.